Non-vascular plants have adapted for survival by all of these methods except
a) small size.
b) alternation of generations.
c) growing extremely long roots.
d) water required for reproduction.

Growing extremely long roots

Explanation:

Non vascular plants are small plants that is without a vascular system. These plants does not consists of vascular system. They have simpler tissues that are specialized for the internal circulation of nutrients and minerals.

The minerals and nutrients are absorbed directly by the leaves of bryophytes. They are small sized plants, complete their life cycle by alternation of generation.

They require water for reproduction because they grow in moist places and wetlands et cetera.

the answer is C. growing extremely long roots.

Explanation:

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.